Clamp mechanism for box-forming machines.



M. HESS CLAMP MECHANISM FOR BOX FORMING MACHINES.

APPLICATION FILED JAN-28.1918.

Patented J uly 16, 1918.

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%TATEJ% FAENT MICHAEL HESS, 0F INDIANAPOLIS, INDIANA, ASSIG-NOR TO INTERNATIONAL PRINTING 00. OF INDIANA, 0F INDIANAPOLIS, INDIANA.

CLAMP MECHANISM FOR BOX-FORMING MACHINES.

, Application filed January 28, 1918.

To all whom it may concern:

Be it known that I, MICHAEL I-IEss, a citizen of the United States, and a resident of Indianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Clamp Mechanism for Box-Forming -Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts.

This invention relates to a clamp mechanism for box forming machines, and the prime object of the invention is the provi-' sion of a hand operated clamp for causing the folded ends of the box structure to adhere together after adhesive material is placed between the folded portions. A further feature of the invention is the provision of a pivoted block adapted to be forced on to the folded ends of the box structure and having a yielding face so that the pressure will be applied uniformly throughout the surface of the parts being folded together.

A further feature of the invention is the provision of a pivotally mounted lever havclamped position. A further feature of the I invention is the provision of a follow or sliding block which rests in a guide way on the pressing block and has a curved recess for engagement with the curvedsurface of the cam, whereby pressure will be uniformly distributed throughout the length of the pressing block.

A further feature of the invention is the provision of means to lift the pressing block when the lever is thrown upwardly, and a further feature of the invention is theprovision of forming pedestals overwhich the box is introduced while the ends are being folded and pasted together.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims:

Figure 1 is a perspective view of the clamping mechanism ready to be applied to use. Fig. 2 is a detail sectional view showing the pressing block in clamped position on the end of the box structure and Fig. 3 isa plan view of the blank employed for Specification of Letters Patent.

Patented July 16%, 191%.,

Serial No. 214,1?4.

forming a box before the same is folded together.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, .1 indicates a table or bench which may be constructed in any preferred form and dimensions, said table having a pair of standards 2 mounted thereon through the upper ends of which is rotatably secured a shaft 3.

Pivotally mounted between the standards 2, at a point below the shaft 3 is a pressing block 4 which is adapted to be forced downwardly and into engagement with a box structure 5 carried by one of the forming pedestals 6, said pressing block being lowered through the medium of a lever 7 having a earn 8 at its pivoted end, said lever being carried by the shaft 3.

In order to distribute the pressure of the cam 8 uniformly throughout the length of the pressing block 4 a follow block 9 is slidably mounted upon the pressing block a between guides 10, the upper face of said follow block having a curved recess 11 which coincides with the curvatureof the face of the cam 8, the follow block 9 moving forwardly or rcarwardly as the lever 7 is raised over the entire end of the box structure, the

under face of the pressing block 4 is provided with a yielding pad 4*, preferably constructed of rubber or similar elastic material so that should a thickened or uneven surface be encountered the pad will adapt itself over the uneven portion and direct pressure against the entire surface of the end of the box.

In operating the device the blank 14, as shown in Fig. 3 is first folded along the lines 15, the folded over portions forming the sides of the box structure and these sides are then introduced between one of the formingipedestals and retaining fingers 16 attached thereto, which fingers hold the side members of the box structure in folded position until such time as the ends of the blank can be secured together.

After the blank has been placed over the first forming pedestal the flaps on the side members of the box structure are folded inwardly along the dotted line 17 and a quantity of adhesive material then placed thereon. The remaining flap is then folded downwardly along the dotted line 18 when the box structure 5 is removed from the first pedestal and mounted upon the pedestal below the pressing block.

As soon as the box structure is properly positioned on the second pedestal, the lever 7 is swung downwardly and the pressing block firmly forced into engagement with the folded over ends of the box structure, and owing to the peculiar construction of the cam and the follow block the pressing block is firmly locked in engagement with the box end. As soon as the adhesive substance is properly set so as to hold the folded ends of the box structure together said box structure is turned end for end and again introduced over the first pedestal and the same operation is then repeated, the folded parts forming the top and bottom sections of the box as shown in Fig. 1.

This form of device is adapted primarily for the use of merchants who do not require a sufficient number of boxes to justify them in purchasing an expensive automatic machine for folding and pasting theends of the boxes and owing to the simplicity of this device it can be very cheaply installed and the operation thereof is sufficiently rapid to enable the smaller merchant to supply the proper number of boxes to handle his product at a minimum expense.

The invention claimed is:

1. In a clamping mechanism, the combination with a forming pedestal adapted to receive and support a box structure, of a pressing block mounted above said pedestal, a cam for forcing said pressing block downwardly and against the box structure on said pedestal, va slidable follow block between the cam and pressing block, and a yielding face on said pressing block adapted to engage the end of the box structure.

2. The combination with a pedestal adapted to receive and support a box structure, of a pivotally mounted pressing block above said pedestal, a follow block slidably mounted upon said pressing block and a cam engaging. said follow block adaptedto force the pressing block downwardly and in engagement with the box structure, on the pedestal-and lock said pressing block in its lowered position. v

3. The combination with a pedestal adapted to receive and support a box structure, of a pressing block above the pedestal, a pair of standards between which one end of the pressing block is pivotally mounted, a shaft carried by the upper end of said standards, a lever on said shaft, a cam on the lever adapt- 'ed to loWer said pressing block, a follow block slidably mounted upon said pressing block and having a curved recess to receive said cam, and means to raise said pressing block when the lever is in elevated position.

In witness whereof, I have hereunto affixed my signature.

MICHAEL HESS. 

